nnn/plugins/fzhist

#!/usr/bin/env sh

# Description: Fuzzy find a command from history, edit in $EDITOR and run as a command
#              Currently supports only bash and fish history
#
# Shell: POSIX compliant
# Author: Arun Prakash Jana

if which fzf >/dev/null 2>&1; then
    fuzzy=fzf
elif which fzy >/dev/null 2>&1; then
    fuzzy=fzy
else
    exit 1
fi

shellname="$(basename "$SHELL")"

if [ "$shellname" = "bash" ]; then
    hist_file="$HOME/.bash_history"
    entry="$("$fuzzy" < "$hist_file")"
elif [ "$shellname" = "fish" ]; then
    hist_file="$HOME/.config/fish/fish_history"
    entry="$(grep "\- cmd: " "$hist_file" | cut -c 8- | "$fuzzy")"
fi

if ! [ -z "$entry" ]; then
    tmpfile=$(mktemp)
    echo "$entry" >> "$tmpfile"
    $EDITOR "$tmpfile"

    if [ -s "$tmpfile" ]; then
        $SHELL -c "$(cat "$tmpfile")"
    fi

    rm "$tmpfile"

    printf "Press any key to exit"
    read -r _
fi